Poor Fuel Economy

[Brad.]

I've got a 1.4 8v polo.
I know it's not gonna be great on the motorway, but cruising at about 70-80mph going from Guildford to Gatwick and back.
Last night it used the best part of half a tank. Makes me think theres something wrong.

It has got an error that reoccuring - Misfiring i think. Would that play a big part or is it just down to the driving?

[alexperkins]

how many miles was it?

[Brad.]

Roughly 60-70miles.

[vw55raz]

have u been using the air conditioning or heating at all??... what about ur driving style? shifting gears early?? and try avoiding harsh braking..

[turkpolo]

i put £35 a week in my gti and it still cnt cope with it. Maybe the way im driving (hard breaking) ripping it apart in first and second gear

[Brad.]

have u been using the air conditioning or heating at all??... what about ur driving style? shifting gears early?? and try avoiding harsh braking..

Had the heating on to get the car warm, then it was all the way round to cold with just the fan on the window on '1' to keep it clear...
It was mostly 5th gear, no braking just cruising at motorway speeds.
Thats what i don't get :/

[alexperkins]

Sounds like a possible dodgy lambda sensor, overfuelling, or your temperature sensor is foobarred.

Air con in the polos will make very little difference to the cars economy - its just a power zapper

[alexperkins]

i put £35 a week in my gti and it still cnt cope with it. Maybe the way im driving (hard breaking) ripping it apart in first and second gear

Answered your own question lol. First and second drink fuel soo much, and rip the gearbox apart too haha

[turkpolo]

lool it happened after i put the exhuast system n induction kit